<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
     <!-- 引入vue -->
     <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    
    <div id="root">
        <h2 v-text="n"></h2>
        <h2>当前的n值是:{{n}}</h2>
        <button @click="add">点我n+1</button>
        <button @click="bey">点我销毁vm</button>
    </div>
    
</body>
<script type="text/javascript">
    Vue.config.productionTip = false //阻止vue在启动生成生产提示。

    const vm = new Vue({
        el:'#root',
        // template:`
        //    <div>
        //       <h2>当前的n值是:{{n}}</h2>
        //       <button @click="add">点我n+1</button>
        //     </div>
        // `,
        data:{
            n:1,
        },
        methods: {
            add(){
                console.log('add')
                this.n++
            },
            bey(){
                console.log('bey')
                this.$destroy()
            }
        },
        watch:{
            n(){
               console.log('n变了')
            }
        },
        beforeCreate() {
            console.log('beforeCreate')
        },
        created() {
            console.log('created')
        },
        beforeMount() {
            console.log('beforeMount')
        },
        mounted(){
             console.log('mounted')
        },
        beforeUpdate() {
            console.log('beforeUpdate')
        },
        updated() {
            console.log('updated')
            console.log(this.n)
        },
        beforeDestroy() {
            console.log('beforeDestroy')
            console.log(this.n)
        },
        destroyed() {
            console.log('destroyed')
        },

    })
    </script>
</html>